¹ Acquired US Oncology Holdings, Inc., in December 2010.
² Acquired McAfee, Inc., in February 2011.
³ Acquired by CenturyLink, Inc., in April 2011.
⁴ Emerged from Chapter 11 bankruptcy in June 2010; acquired by Rock-Tenn Company in May 2011.
⁵ Acquired Atlas Energy, Inc., in February 2011.
⁶ Changed name to Meritor, Inc., in March 2011.
⁷ Acquired BJ Services Company in April 2010.
⁸ Resigned in April 2011.